5647691994 has 16 divisors (see below), whose sum is σ = 12909010368. Its totient is φ = 1613626272.

The previous prime is 5647691989. The next prime is 5647692019. The reversal of 5647691994 is 4991967465.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67234387 + ... + 67234470.

It is an arithmetic number, because the mean of its divisors is an integer number (806813148).

Almost surely, 2^5647691994 is an apocalyptic number.

5647691994 is an abundant number, since it is smaller than the sum of its proper divisors (7261318374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5647691994 is a wasteful number, since it uses less digits than its factorization.

5647691994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134468869.

The product of its digits is 14696640, while the sum is 60.

The square root of 5647691994 is about 75151.1276961298. The cubic root of 5647691994 is about 1780.8349399037.

The spelling of 5647691994 in words is "five billion, six hundred forty-seven million, six hundred ninety-one thousand, nine hundred ninety-four".